GestureZoom

Object Hierarchy:

Description:

[ CCode ( type_id = "gtk_gesture_zoom_get_type ()" ) ]
public class GestureZoom : Gesture

GestureZoom is a Gesture implementation able to recognize pinch/zoom gestures, whenever the distance between both tracked sequences changes, the scale_changed signal is emitted to report the scale factor.

Namespace: Gtk

Package: gtk+-3.0

Content:

Creation methods:

public GestureZoom (Widget widget)
Returns a newly created Gesture that recognizes zoom in/out gestures (usually known as pinch/zoom).

Methods:

public double get_scale_delta ()
If this is active, this function returns the zooming difference since the gesture was recognized (hence the starting point is considered 1:1).

Signals:

public signal void scale_changed (double scale)
This signal is emitted whenever the distance between both tracked sequences changes.

Inherited Members:

All known members inherited from class Gtk.Gesture

All known members inherited from class Gtk.EventController

All known members inherited from class GLib.Object

@get
@new
@ref
@set
add_toggle_ref
add_weak_pointer
bind_property
connect
constructed
disconnect
dispose
dup_data
dup_qdata
force_floating
freeze_notify
get_class
get_data

get_property
get_qdata
get_type
getv
interface_find_property
interface_install_property
interface_list_properties
is_floating
new_valist
new_with_properties
newv
notify
notify_property
ref_count
ref_sink
remove_toggle_ref
remove_weak_pointer

replace_data
replace_qdata
set_data
set_data_full
set_property
set_qdata
set_qdata_full
set_valist
setv
steal_data
steal_qdata
thaw_notify
unref
watch_closure
weak_ref
weak_unref